From 2c7c458769cb564a58143306dab00d259e329287 Mon Sep 17 00:00:00 2001 From: TuxMonkey <8196772+tuxmonkey@user.noreply.gitee.com> Date: Tue, 25 Nov 2025 14:55:34 +0800 Subject: [PATCH] bsp_flash --- User_Code/bsp/flash/bsp_flash.c | 268 +++++++++++++++++++++++++++++++ User_Code/bsp/flash/bsp_flash.h | 79 +++++++++ User_Code/bsp/flash/bsp_flash.md | 0 User_Code/bsp/iic/bsp_iic.c | 146 +++++++++++++++++ User_Code/bsp/iic/bsp_iic.h | 108 +++++++++++++ User_Code/bsp/iic/bsp_iic.md | 19 +++ 6 files changed, 620 insertions(+) create mode 100644 User_Code/bsp/flash/bsp_flash.c create mode 100644 User_Code/bsp/flash/bsp_flash.h create mode 100644 User_Code/bsp/flash/bsp_flash.md create mode 100644 User_Code/bsp/iic/bsp_iic.c create mode 100644 User_Code/bsp/iic/bsp_iic.h create mode 100644 User_Code/bsp/iic/bsp_iic.md diff --git a/User_Code/bsp/flash/bsp_flash.c b/User_Code/bsp/flash/bsp_flash.c new file mode 100644 index 0000000..980834f --- /dev/null +++ b/User_Code/bsp/flash/bsp_flash.c @@ -0,0 +1,268 @@ +#include "bsp_flash.h" +#include "main.h" +#include "string.h" + +static uint32_t ger_sector(uint32_t address); + +/** + * @brief erase flash + * @param[in] address: flash address + * @param[in] len: page num + * @retval none + */ +/** + * @brief 擦除flash + * @param[in] address: flash 地址 + * @param[in] len: 页数量 + * @retval none + */ +void flash_erase_address(uint32_t address, uint16_t len) +{ + FLASH_EraseInitTypeDef flash_erase; + uint32_t error; + + flash_erase.Sector = ger_sector(address); + flash_erase.TypeErase = FLASH_TYPEERASE_SECTORS; + flash_erase.VoltageRange = FLASH_VOLTAGE_RANGE_3; + flash_erase.NbSectors = len; + + HAL_FLASH_Unlock(); + HAL_FLASHEx_Erase(&flash_erase, &error); + HAL_FLASH_Lock(); +} + +/** + * @brief write data to one page of flash + * @param[in] start_address: flash address + * @param[in] buf: data point + * @param[in] len: data num + * @retval success 0, fail -1 + */ +/** + * @brief 往一页flash写数据 + * @param[in] start_address: flash 地址 + * @param[in] buf: 数据指针 + * @param[in] len: 数据长度 + * @retval success 0, fail -1 + */ +int8_t flash_write_single_address(uint32_t start_address, uint32_t *buf, uint32_t len) +{ + static uint32_t uw_address; + static uint32_t end_address; + static uint32_t *data_buf; + static uint32_t data_len; + + HAL_FLASH_Unlock(); + + uw_address = start_address; + end_address = get_next_flash_address(start_address); + data_buf = buf; + data_len = 0; + + while (uw_address <= end_address) + { + + if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_FLASHWORD, uw_address, *data_buf) == HAL_OK) + { + uw_address += 4; + data_buf++; + data_len++; + if (data_len == len) + { + break; + } + } + else + { + HAL_FLASH_Lock(); + return -1; + } + } + + HAL_FLASH_Lock(); + return 0; +} + +/** + * @brief write data to some pages of flash + * @param[in] start_address: flash start address + * @param[in] end_address: flash end address + * @param[in] buf: data point + * @param[in] len: data num + * @retval success 0, fail -1 + */ +/** + * @brief 往几页flash写数据 + * @param[in] start_address: flash 开始地址 + * @param[in] end_address: flash 结束地址 + * @param[in] buf: 数据指针 + * @param[in] len: 数据长度 + * @retval success 0, fail -1 + */ +int8_t flash_write_muli_address(uint32_t start_address, uint32_t end_address, uint32_t *buf, uint32_t len) +{ + uint32_t uw_address = 0; + uint32_t *data_buf; + uint32_t data_len; + + HAL_FLASH_Unlock(); + + uw_address = start_address; + data_buf = buf; + data_len = 0; + while (uw_address <= end_address) + { + if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_FLASHWORD, uw_address, *data_buf) == HAL_OK) + { + uw_address += 4; + data_buf++; + data_len++; + if (data_len == len) + { + break; + } + } + else + { + HAL_FLASH_Lock(); + return -1; + } + } + + HAL_FLASH_Lock(); + return 0; +} + + +/** + * @brief read data for flash + * @param[in] address: flash address + * @param[out] buf: data point + * @param[in] len: data num + * @retval none + */ +/** + * @brief 从flash读数据 + * @param[in] start_address: flash 地址 + * @param[out] buf: 数据指针 + * @param[in] len: 数据长度 + * @retval none + */ +void flash_read(uint32_t address, uint32_t *buf, uint32_t len) +{ + memcpy(buf, (void *) address, len * 4); +} + + +/** + * @brief get the sector number of flash + * @param[in] address: flash address + * @retval sector number + */ +/** + * @brief 获取flash的sector号 + * @param[in] address: flash 地址 + * @retval sector号 + */ +static uint32_t ger_sector(uint32_t address) +{ + uint32_t sector = 0; + if ((address < ADDR_FLASH_SECTOR_1) && (address >= ADDR_FLASH_SECTOR_0)) + { + sector = FLASH_SECTOR_0; + } + else if ((address < ADDR_FLASH_SECTOR_2) && (address >= ADDR_FLASH_SECTOR_1)) + { + sector = FLASH_SECTOR_1; + } + else if ((address < ADDR_FLASH_SECTOR_3) && (address >= ADDR_FLASH_SECTOR_2)) + { + sector = FLASH_SECTOR_2; + } + else if ((address < ADDR_FLASH_SECTOR_4) && (address >= ADDR_FLASH_SECTOR_3)) + { + sector = FLASH_SECTOR_3; + } + else if ((address < ADDR_FLASH_SECTOR_5) && (address >= ADDR_FLASH_SECTOR_4)) + { + sector = FLASH_SECTOR_4; + } + else if ((address < ADDR_FLASH_SECTOR_6) && (address >= ADDR_FLASH_SECTOR_5)) + { + sector = FLASH_SECTOR_5; + } + else if ((address < ADDR_FLASH_SECTOR_7) && (address >= ADDR_FLASH_SECTOR_6)) + { + sector = FLASH_SECTOR_6; + } + else if ((address < ADDR_FLASH_SECTOR_8) && (address >= ADDR_FLASH_SECTOR_7)) + { + sector = FLASH_SECTOR_7; + } + return sector; +} + +/** + * @brief get the next page flash address + * @param[in] address: flash address + * @retval next page flash address + */ +/** + * @brief 获取下一页flash地址 + * @param[in] address: flash 地址 + * @retval 下一页flash地址 + */ +uint32_t get_next_flash_address(uint32_t address) +{ + uint32_t sector = 0; + + if ((address < ADDR_FLASH_SECTOR_1) && (address >= ADDR_FLASH_SECTOR_0)) + { + sector = ADDR_FLASH_SECTOR_1; + } + else if ((address < ADDR_FLASH_SECTOR_2) && (address >= ADDR_FLASH_SECTOR_1)) + { + sector = ADDR_FLASH_SECTOR_2; + } + else if ((address < ADDR_FLASH_SECTOR_3) && (address >= ADDR_FLASH_SECTOR_2)) + { + sector = ADDR_FLASH_SECTOR_3; + } + else if ((address < ADDR_FLASH_SECTOR_4) && (address >= ADDR_FLASH_SECTOR_3)) + { + sector = ADDR_FLASH_SECTOR_4; + } + else if ((address < ADDR_FLASH_SECTOR_5) && (address >= ADDR_FLASH_SECTOR_4)) + { + sector = ADDR_FLASH_SECTOR_5; + } + else if ((address < ADDR_FLASH_SECTOR_6) && (address >= ADDR_FLASH_SECTOR_5)) + { + sector = ADDR_FLASH_SECTOR_6; + } + else if ((address < ADDR_FLASH_SECTOR_7) && (address >= ADDR_FLASH_SECTOR_6)) + { + sector = ADDR_FLASH_SECTOR_7; + } + else if ((address < ADDR_FLASH_SECTOR_8) && (address >= ADDR_FLASH_SECTOR_7)) + { + sector = ADDR_FLASH_SECTOR_8; + } + else if ((address < ADDR_FLASH_SECTOR_9) && (address >= ADDR_FLASH_SECTOR_8)) + { + sector = ADDR_FLASH_SECTOR_9; + } + else if ((address < ADDR_FLASH_SECTOR_10) && (address >= ADDR_FLASH_SECTOR_9)) + { + sector = ADDR_FLASH_SECTOR_10; + } + else if ((address < ADDR_FLASH_SECTOR_11) && (address >= ADDR_FLASH_SECTOR_10)) + { + sector = ADDR_FLASH_SECTOR_11; + } + else /*(address < FLASH_END_ADDR) && (address >= ADDR_FLASH_SECTOR_23))*/ + { + sector = FLASH_END_ADDR; + } + return sector; +} diff --git a/User_Code/bsp/flash/bsp_flash.h b/User_Code/bsp/flash/bsp_flash.h new file mode 100644 index 0000000..2edeea7 --- /dev/null +++ b/User_Code/bsp/flash/bsp_flash.h @@ -0,0 +1,79 @@ +#ifndef _BSP_FLASH_H +#define _BSP_FLASH_H +#include "main.h" + +/* Base address of the Flash sectors */ +#define ADDR_FLASH_SECTOR_0 ((uint32_t)0x08000000) /* Base address of Sector 0, 16 Kbytes */ +#define ADDR_FLASH_SECTOR_1 ((uint32_t)0x08004000) /* Base address of Sector 1, 16 Kbytes */ +#define ADDR_FLASH_SECTOR_2 ((uint32_t)0x08008000) /* Base address of Sector 2, 16 Kbytes */ +#define ADDR_FLASH_SECTOR_3 ((uint32_t)0x0800C000) /* Base address of Sector 3, 16 Kbytes */ +#define ADDR_FLASH_SECTOR_4 ((uint32_t)0x08010000) /* Base address of Sector 4, 64 Kbytes */ +#define ADDR_FLASH_SECTOR_5 ((uint32_t)0x08020000) /* Base address of Sector 5, 128 Kbytes */ +#define ADDR_FLASH_SECTOR_6 ((uint32_t)0x08040000) /* Base address of Sector 6, 128 Kbytes */ +#define ADDR_FLASH_SECTOR_7 ((uint32_t)0x08060000) /* Base address of Sector 7, 128 Kbytes */ +#define ADDR_FLASH_SECTOR_8 ((uint32_t)0x08080000) /* Base address of Sector 8, 128 Kbytes */ +#define ADDR_FLASH_SECTOR_9 ((uint32_t)0x080A0000) /* Base address of Sector 9, 128 Kbytes */ +#define ADDR_FLASH_SECTOR_10 ((uint32_t)0x080C0000) /* Base address of Sector 10, 128 Kbytes */ +#define ADDR_FLASH_SECTOR_11 ((uint32_t)0x080E0000) /* Base address of Sector 11, 128 Kbytes */ + +#define FLASH_END_ADDR ((uint32_t)0x08100000) /* Base address of Sector 23, 128 Kbytes */ + + +#define ADDR_FLASH_SECTOR_12 ((uint32_t)0x08100000) /* Base address of Sector 12, 16 Kbytes */ +#define ADDR_FLASH_SECTOR_13 ((uint32_t)0x08104000) /* Base address of Sector 13, 16 Kbytes */ +#define ADDR_FLASH_SECTOR_14 ((uint32_t)0x08108000) /* Base address of Sector 14, 16 Kbytes */ +#define ADDR_FLASH_SECTOR_15 ((uint32_t)0x0810C000) /* Base address of Sector 15, 16 Kbytes */ +#define ADDR_FLASH_SECTOR_16 ((uint32_t)0x08110000) /* Base address of Sector 16, 64 Kbytes */ +#define ADDR_FLASH_SECTOR_17 ((uint32_t)0x08120000) /* Base address of Sector 17, 128 Kbytes */ +#define ADDR_FLASH_SECTOR_18 ((uint32_t)0x08140000) /* Base address of Sector 18, 128 Kbytes */ +#define ADDR_FLASH_SECTOR_19 ((uint32_t)0x08160000) /* Base address of Sector 19, 128 Kbytes */ +#define ADDR_FLASH_SECTOR_20 ((uint32_t)0x08180000) /* Base address of Sector 20, 128 Kbytes */ +#define ADDR_FLASH_SECTOR_21 ((uint32_t)0x081A0000) /* Base address of Sector 21, 128 Kbytes */ +#define ADDR_FLASH_SECTOR_22 ((uint32_t)0x081C0000) /* Base address of Sector 22, 128 Kbytes */ +#define ADDR_FLASH_SECTOR_23 ((uint32_t)0x081E0000) /* Base address of Sector 23, 128 Kbytes */ + + +/** + * @brief erase flash + * @param[in] address: flash address + * @param[in] len: page num + * @retval none + */ +void flash_erase_address(uint32_t address, uint16_t len); + +/** + * @brief write data to one page of flash + * @param[in] start_address: flash address + * @param[in] buf: data point + * @param[in] len: data num + * @retval success 0, fail -1 + */ +int8_t flash_write_single_address(uint32_t start_address, uint32_t *buf, uint32_t len); + + +/** + * @brief write data to some pages of flash + * @param[in] start_address: flash start address + * @param[in] end_address: flash end address + * @param[in] buf: data point + * @param[in] len: data num + * @retval success 0, fail -1 + */ +int8_t flash_write_muli_address(uint32_t start_address, uint32_t end_address, uint32_t *buf, uint32_t len); + +/** + * @brief read data for flash + * @param[in] address: flash address + * @param[out] buf: data point + * @param[in] len: data num + * @retval none + */ +void flash_read(uint32_t address, uint32_t *buf, uint32_t len); + +/** + * @brief get the next page flash address + * @param[in] address: flash address + * @retval next page flash address + */ +uint32_t get_next_flash_address(uint32_t address); +#endif diff --git a/User_Code/bsp/flash/bsp_flash.md b/User_Code/bsp/flash/bsp_flash.md new file mode 100644 index 0000000..e69de29 diff --git a/User_Code/bsp/iic/bsp_iic.c b/User_Code/bsp/iic/bsp_iic.c new file mode 100644 index 0000000..692d5ee --- /dev/null +++ b/User_Code/bsp/iic/bsp_iic.c @@ -0,0 +1,146 @@ +// #include "bsp_iic.h" +// #include "memory.h" +// #include "stdlib.h" +// +// static uint8_t idx = 0; // 配合中断以及初始化 +// static IICInstance *iic_instance[IIC_DEVICE_CNT] = {NULL}; +// +// IICInstance *IICRegister(IIC_Init_Config_s *conf) +// { +// if (idx >= MX_IIC_SLAVE_CNT) // 超过最大实例数 +// while (1) // 酌情增加允许的实例上限,也有可能是内存泄漏 +// ; +// // 申请到的空间未必是0, 所以需要手动初始化 +// IICInstance *instance = (IICInstance *) malloc(sizeof(IICInstance)); +// instance = (IICInstance *) malloc(sizeof(IICInstance)); +// memset(instance, 0, sizeof(IICInstance)); +// +// instance->dev_address = conf->dev_address << 1; // 地址左移一位,最低位为读写位 +// instance->callback = conf->callback; +// instance->work_mode = conf->work_mode; +// instance->handle = conf->handle; +// instance->id = conf->id; +// +// iic_instance[idx++] = instance; +// return instance; +// } +// +// void IICSetMode(IICInstance *iic, IIC_Work_Mode_e mode) +// { +// // HAL自带重入保护,不需要手动终止或等待传输完成 +// if (iic->work_mode != mode) +// { +// iic->work_mode = mode; // 如果不同才需要修改 +// } +// } +// +// void IICTransmit(IICInstance *iic, uint8_t *data, uint16_t size, IIC_Seq_Mode_e seq_mode) +// { +// if (seq_mode != IIC_SEQ_RELEASE && seq_mode != IIC_SEQ_HOLDON) +// while (1); // 未知传输模式, 程序停止 +// +// // 根据不同的工作模式进行不同的传输 +// switch (iic->work_mode) +// { +// case IIC_BLOCK_MODE: +// if (seq_mode != IIC_SEQ_RELEASE) +// while (1); // 阻塞模式下不支持HOLD ON模式!!!只能传输完成后立刻释放总线 +// HAL_I2C_Master_Transmit(iic->handle, iic->dev_address, data, size, 100); // 默认超时时间100ms +// break; +// case IIC_IT_MODE: +// if (seq_mode == IIC_SEQ_RELEASE) +// HAL_I2C_Master_Seq_Transmit_IT(iic->handle, iic->dev_address, data, size, I2C_OTHER_AND_LAST_FRAME); +// else if (seq_mode == IIC_SEQ_HOLDON) +// HAL_I2C_Master_Seq_Transmit_IT(iic->handle, iic->dev_address, data, size, I2C_OTHER_FRAME); +// break; +// case IIC_DMA_MODE: +// if (seq_mode == IIC_SEQ_RELEASE) +// HAL_I2C_Master_Seq_Transmit_DMA(iic->handle, iic->dev_address, data, size, I2C_OTHER_AND_LAST_FRAME); +// else if (seq_mode == IIC_SEQ_HOLDON) +// HAL_I2C_Master_Seq_Transmit_DMA(iic->handle, iic->dev_address, data, size, I2C_OTHER_FRAME); +// break; +// default: +// while (1); // 未知传输模式, 程序停止 +// } +// } +// +// void IICReceive(IICInstance *iic, uint8_t *data, uint16_t size, IIC_Seq_Mode_e seq_mode) +// { +// if (seq_mode != IIC_SEQ_RELEASE && seq_mode != IIC_SEQ_HOLDON) +// while (1); // 未知传输模式, 程序停止,请检查指针越界 +// +// // 初始化接收缓冲区地址以及接受长度, 用于中断回调函数 +// iic->rx_buffer = data; +// iic->rx_len = size; +// +// switch (iic->work_mode) +// { +// case IIC_BLOCK_MODE: +// if (seq_mode != IIC_SEQ_RELEASE) +// while (1); // 阻塞模式下不支持HOLD ON模式!!! +// HAL_I2C_Master_Receive(iic->handle, iic->dev_address, data, size, 100); // 默认超时时间100ms +// break; +// case IIC_IT_MODE: +// if (seq_mode == IIC_SEQ_RELEASE) +// HAL_I2C_Master_Seq_Receive_IT(iic->handle, iic->dev_address, data, size, I2C_OTHER_AND_LAST_FRAME); +// else if (seq_mode == IIC_SEQ_HOLDON) +// HAL_I2C_Master_Seq_Receive_IT(iic->handle, iic->dev_address, data, size, I2C_OTHER_FRAME); +// break; +// case IIC_DMA_MODE: +// if (seq_mode == IIC_SEQ_RELEASE) +// HAL_I2C_Master_Seq_Receive_DMA(iic->handle, iic->dev_address, data, size, I2C_OTHER_AND_LAST_FRAME); +// else if (seq_mode == IIC_SEQ_HOLDON) +// HAL_I2C_Master_Seq_Receive_DMA(iic->handle, iic->dev_address, data, size, I2C_OTHER_FRAME); +// break; +// default: +// while (1); // 未知传输模式, 程序停止 +// break; +// } +// } +// +// void IICAccessMem(IICInstance *iic, uint16_t mem_addr, uint8_t *data, uint16_t size, IIC_Mem_Mode_e mem_mode, +// uint8_t mem8bit_flag) +// { +// uint16_t bit_flag = mem8bit_flag ? I2C_MEMADD_SIZE_8BIT : I2C_MEMADD_SIZE_16BIT; +// if (mem_mode == IIC_WRITE_MEM) +// { +// HAL_I2C_Mem_Write(iic->handle, iic->dev_address, mem_addr, bit_flag, data, size, 100); +// } +// else if (mem_mode == IIC_READ_MEM) +// { +// HAL_I2C_Mem_Read(iic->handle, iic->dev_address, mem_addr, bit_flag, data, size, 100); +// } +// else +// { +// while (1); // 未知模式, 程序停止 +// } +// } +// +// /** +// * @brief IIC接收完成回调函数 +// * +// * @param hi2c handle +// */ +// void HAL_I2C_MasterRxCpltCallback(I2C_HandleTypeDef *hi2c) +// { +// // 如果是当前i2c硬件发出的complete,且dev_address和之前发起接收的地址相同,同时回到函数不为空, 则调用回调函数 +// for (uint8_t i = 0; i < idx; i++) +// { +// if (iic_instance[i]->handle == hi2c && hi2c->Devaddress == iic_instance[i]->dev_address) +// { +// if (iic_instance[i]->callback != NULL) // 回调函数不为空 +// iic_instance[i]->callback(iic_instance[i]); +// return; +// } +// } +// } +// +// /** +// * @brief 内存访问回调函数,仅做形式上的封装,仍然使用HAL_I2C_MasterRxCpltCallback +// * +// * @param hi2c handle +// */ +// void HAL_I2C_MemRxCpltCallback(I2C_HandleTypeDef *hi2c) +// { +// HAL_I2C_MasterRxCpltCallback(hi2c); +// } diff --git a/User_Code/bsp/iic/bsp_iic.h b/User_Code/bsp/iic/bsp_iic.h new file mode 100644 index 0000000..98eb20f --- /dev/null +++ b/User_Code/bsp/iic/bsp_iic.h @@ -0,0 +1,108 @@ +// #include "i2c.h" +// #include "stdint.h" +// +// #define IIC_DEVICE_CNT 2 // C板引出了I2C2和I2C3 +// #define MX_IIC_SLAVE_CNT 8 // 最大从机数目,根据需要修改 +// +// /* i2c 工作模式枚举 */ +// typedef enum +// { +// // 基本工作模式 +// IIC_BLOCK_MODE = 0, // 阻塞模式 +// IIC_IT_MODE, // 中断模式 +// IIC_DMA_MODE, // DMA模式 +// +// } IIC_Work_Mode_e; +// +// /* I2C MEM工作模式枚举,这两种方法都是阻塞 */ +// typedef enum +// { +// IIC_READ_MEM = 0, // 读取从机内部的寄存器or内存 +// IIC_WRITE_MEM, // 写入从机内部的寄存器or内存 +// } IIC_Mem_Mode_e; +// +// /* Seq传输工作模式枚举,注意HOLD_ON要在IT或DMA下使用 */ +// // 必须以IIC_RELEASE为最后一次传输,否则会导致总线占有权无法释放 +// typedef enum +// { +// IIC_SEQ_RELEASE, // 完成传输后释放总线占有权,这是默认的传输方式 +// IIC_SEQ_HOLDON = 0, // 保持总线占有权不释放,只支持IT和DMA模式 +// } IIC_Seq_Mode_e; +// +// /* i2c实例 */ +// typedef struct iic_temp_s +// { +// I2C_HandleTypeDef *handle; // i2c handle +// uint8_t dev_address; // 暂时只支持7位地址(还有一位是读写位) +// +// IIC_Work_Mode_e work_mode; // 工作模式 +// uint8_t *rx_buffer; // 接收缓冲区指针 +// uint8_t rx_len; // 接收长度 +// void (*callback)(struct iic_temp_s *); // 接收完成后的回调函数 +// +// void *id; // 用于标识i2c instance +// } IICInstance; +// +// /* I2C 初始化结构体配置 */ +// typedef struct +// { +// I2C_HandleTypeDef *handle; // i2c handle +// uint8_t dev_address; // 暂时只支持7位地址(还有一位是读写位),注意不需要左移 +// IIC_Work_Mode_e work_mode; // 工作模式 +// void (*callback)(IICInstance *); // 接收完成后的回调函数 +// void *id; // 用于标识i2c instance +// } IIC_Init_Config_s; +// +// /** +// * @brief IIC初始化 +// * +// * @param conf 初始化配置 +// * @return IICInstance* +// */ +// IICInstance *IICRegister(IIC_Init_Config_s *conf); +// +// /** +// * @brief IIC设置工作模式 +// * +// * @param iic 要设置的iic实例 +// * @param mode 工作模式 +// */ +// void IICSetMode(IICInstance *iic, IIC_Work_Mode_e mode); +// +// /** +// * @brief IIC发送数据 +// * +// * @param iic iic实例 +// * @param data 待发送的数据首地址指针 +// * @param size 发送长度 +// * @param mode 序列传输模式 +// * @note 注意,如果发送结构体,那么该结构体在声明时务必使用#pragma pack(1)进行对齐,并在声明结束后使用#pragma pack()恢复对齐 +// * +// */ +// void IICTransmit(IICInstance *iic, uint8_t *data, uint16_t size, IIC_Seq_Mode_e mode); +// +// /** +// * @brief IIC接收数据 +// * +// * @param iic iic实例 +// * @param data 接收数据的首地址指针 +// * @param size 接收长度 +// * @param mode 序列传输模式 +// * @note 注意,如果直接将接收数据memcpy到目标结构体或通过强制类型转换进行逐字节写入, +// * 那么该结构体在声明时务必使用#pragma pack(1)进行对齐,并在声明结束后使用#pragma pack()恢复对齐 +// */ +// void IICReceive(IICInstance *iic, uint8_t *data, uint16_t size, IIC_Seq_Mode_e mode); +// +// /** +// * @brief IIC读取从机寄存器(内存),只支持阻塞模式,超时默认为1ms +// * +// * @param iic iic实例 +// * @param mem_addr 要读取的从机内存地址,目前只支持8位地址 +// * @param data 要读取或写入的数据首地址指针 +// * @param size 要读取或写入的数据长度 +// * @param mode 写入或读取模式: IIC_READ_MEM or IIC_WRITE_MEM +// * @param mem8bit_flag 从机内存地址是否为8位 +// */ +// void IICAccessMem(IICInstance *iic, uint16_t mem_addr, uint8_t *data, uint16_t size, IIC_Mem_Mode_e mode, +// uint8_t mem8bit_flag); + diff --git a/User_Code/bsp/iic/bsp_iic.md b/User_Code/bsp/iic/bsp_iic.md new file mode 100644 index 0000000..648212c --- /dev/null +++ b/User_Code/bsp/iic/bsp_iic.md @@ -0,0 +1,19 @@ +# bsp iic(暂未启用) + +> 预计增加模拟iic + +## 注意事项 + +使用时写入地址，不需要左移！！！ + +cubemx未配置dma时请勿使用dma传输，其行为是未定义的。 + +## 总线机制详解 + +关于I2C的序列传输,Restart condition和总线仲裁,请看: + +https://blog.csdn.net/NeoZng/article/details/128496694 + +https://blog.csdn.net/NeoZng/article/details/128486366 + +使用序列通信则在单次通信后不会释放总线,继续占用直到调用传输函数时传入`IIC_RELEASE`参数. 这个功能只在一条总线上挂载多个主机的时候有用.